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Find the unknown number in an equation (+, - ) relating four whole numbers.
Clarifications:

Essential Understandings

Concrete:

  • Identify the blank or symbol that represents a number (e.g., “n,” “x”)
  • Use manipulatives or a calculator to solve an equation (e.g., 3 + 2 = n + 1).
    º Solve one side of the equation (3 + 2 = n + 1, 5 = n + 1).
    º Determine the unknown number that makes the equation true (5 = n + 1, so n = 4).
Representation:
  • Understand the following concepts, symbols, and vocabulary for unknown symbols, operations (+, -), equality.
  • Identify or draw a pictorial representation that matches the equation.
  • Solve the equation using a pictorial representation or numbers.

Access Point #: MAFS.4.OA.1.AP.ba (Archived Access Point)
Access Point Standards

Visit the specific benchmark webpage to find related instructional resources.

  • MAFS.4.OA.1.b: Determine the unknown whole number in an equation relating four whole numbers using comparative relational thinking. For example, solve 76 + 9 = n + 5 for n by arguing that nine is four more than five, so the unknown number must be four greater than 76.
Access Point Information
Number:
MAFS.4.OA.1.AP.ba
Category:
Access Points
Cluster:
Use the four operations with whole numbers to solve problems. (Major Cluster) : 

Clusters should not be sorted from Major to Supporting and then taught in that order. To do so would strip the coherence of the mathematical ideas and miss the opportunity to enhance the major work of the grade with the supporting clusters.

Access Point Courses
  • Grade Four Mathematics (#5012060): The benchmarks in this course are mastery goals that students are expected to attain by the end of the year. To build mastery, students will continue to review and apply earlier grade-level benchmarks and expectations.
  • Access Mathematics Grade 4 (#7712050): Access Courses:

    Access courses are for students with the most significant cognitive disabilities. Access courses are designed to provide students access to grade-level general curriculum. Access points are alternate academic achievement standards included in access courses that target the salient content of Florida’s standards. Access points are intentionally designed to academically challenge students with the most significant cognitive disabilities. 

  • Foundational Skills in Mathematics 3-5 (#5012015):

    This course supports students who need additional instruction in foundational mathematics skills as it relates to core instruction. Instruction will use explicit, systematic, and sequential approaches to mathematics instruction addressing all domains including number sense & operations, fractions, algebraic reasoning, geometric reasoning, measurement and data analysis & probability. Teachers will use the listed standards that correspond to each students’ needs. 

    Effective instruction matches instruction to the need of the students in the group and provides multiple opportunities to practice the skill and receive feedback. The additional time allotted for this course is in addition to core instruction. The intervention includes materials and strategies designed to supplement core instruction.